Engine injection-valve



A. TACCHELLA.

. ENGINE INJECTION VALVE.

APPLICATION FILED ocr. 5, 1917.

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UNITED STATES PATENT orrlcI-z.

ADOIJF TGCHELLA., OF ST. LOUIS, MISSOURI, ASSIGNOB TO BUSCH-SULZER BROS.-

DIESEL ENGINE COMPANY, 0F ST. LOUIS, MISSOURI, A CORPORATION OF MIS- SOURI. v

recents.

ENGINE INJECTION-VALVE.

Patented N ov., 15, 1921.

Application nled October 5, 1917. Serial Ho. 194,912.

To all whom it may concern.'

Be it known that I, ADOLF TACCHELLA, a citizen of the Confederation of Switzerland, resident of St. Louis, Missouri, have invented the following described Improve ments in Engine Injection-Valves.

rl"his invention is an improvement in the fuel injection apparatus of internal com: bustion engines and consists' more especially in the design of such apparatus whereby the fuel valve or needle as also. the atomizing elements can be removed for inspection or grinding without disarranging the valve lever adjustments or the packing which normally seals the passage in which the valve works. ln' injection type engines re-grinding of the fuel -needle is necessary from time to time and the present invention permitsv the needle to be withdrawn .and removed for this purpose with the least labor and delay. 'lhe invention consists in disposingthe gland containing the packing material in such relation to the other parts that it'may, be removed from the engine-while still mounted on the motion-imparting member which passes through it thereby leaving both the needle and its seat exposed 'for grinding and permitting a quick replacement in leak-prooi manner. The invention more particularly consists in "mounting and removing the removable packing gland on the needle itself so that/the latter may be ground'while the former still remains on the needle and it also consists in an organization of the fuel valve s ringin a case in such manner that it is 1i rewise removable with the fuel needle and without release of its compression and so lthat the spring does not have to be re-com- L.pressed when the valve is replaced. rlhe invention also comprises a construction of valve lifter which permits the removal not only of the needle and gland, but also of the fuel atomizing elements without disarranging the setting of the. valve operating levers.` n the accompanying drawings, there is.

shown an exemplication of my invention- Figure 1, illustrating an axial section of a fuel valve of ordinary type including the seating spring and fue] needle; j

Fig. 2 being a similar view with the needle valve, its packing gland and spring case partly removed.

The valve casing 1 is clamped as usual in the fuel valve opening in the engine cylinder 2 and contains. within .it the seat 3 for the needle valve Adas well as the atomiz'er sleeve j 5 and its atomizer plates 5il and the entrance ducts for the fuel oil and air, all as cus tomary in engines of this class. The valve casing also carries an upstanding bracket 6 on which the spring case 7 is bolted by means ci studs such as shown at 8. The case contains the spring 9 which closes the valve 4 against its seat and is formed of two parts joined together by bolts 10, one of which is shown in the drawing. `The'spring 9 conned in the case, thrusts against the head 11 on the valve member 4 and the shoulder 11n on the head 11 is arranged so that'it will abiit against the margin of the aperture in the ower member of the case when the latter is removed from the; bracket 6. and

ates to Swing .the litter upwardlywhen it -opens the fuel valve. 'lhe lifted-1Q carries a removable thrust plate 14 seated on its interior shoulder and convexed on its upper surface for engagement with the lower end of the head 11. The thrust plate is an anyby the 'fuel valve lever 13 which latter opernulus encircling the valve 4 and remaining on it when removed as presentlyv explained. A small set screw 15 normally retains it in position in the aperture in the lifter 12. The thrust member 14 represents the point of env gagement of the valve operating means with the valve and is situated at a less distance from the top of the bore of the valve casing than the length oi the valve member that is within` such bore, thus making a compact organization ci parts and permltting the bracket t to be correspondingly short and rigid. v'.lheentrance ofthe needle valved iiiljo the valve casing 1 is sealed by a gland, t e loarrel'lt and cap 17 whereof surround the valve member as usual. The exterior of the gland barrel is shouldered and embraced lby a castellated sleeve nut 18 which can be I the oint is readily made tight a inst leakage. The external diameter o the gland and its sleeve nut 18 is less than the internal diameter of the apertureV in the lifter 12 so 'that they v will pass throughthat aperture when the set screw 15 has been unscrewed to release the thrustplate 14. Thus as shown '1n 2, bygrst unbolting the spring case- Fig. and releasing the set screw 15 and the sleeve nut 18, the needle valvey With the. spring case, packing gland, and its thrust plate still mounted on it, can be withdrawn from the engine. Neither the spring nor the packing material inside Ithe glandneed be disturbed and as theseY parts are symmetrical in shape and not of large diameter they do not in the and it' 'is -to be understood that there is 'nol atomizer sleeve, these least interfere'with the process of grinding, nor need the lifter be disturbed or the adustment between it and the fuel valve lever.'

The atomizer sleeve andthe atomizing ele- 'ments mounted thereon are also smaller in diameter than the aperture in the lifter and by means or a suitable tool inserted into the for cleaning or repair without disturbing the lifter lever or its adjustments.

i It' willnow be apparent that the resultthus attained `may also be secured by the i proper cordination of parts according to the principle of the present invention invarious dierent designs of valve-structure limitation to the speciicvalve design herein described except as specicallystated in the ap ended claims.

laims: '1. The combination in an internal com- 'bustion engine of an injection valve casing secured in and to `the engine wall and having a valve seat located close to a combustion -space,a valve member extending into said casing and enga ing'said seat,'a gland for the valveadapte to be secured in fixed relation to the casing and operating means orr said valve member 'normally engaging the V lsame'at a pointwhich is separated: rom the Vbore of the'valve casing by a -distance'less than the length? of that portion of the valve member that is .within v`said' casing, said membengagland removablyxedto t e casmeans being organized to provide a ,clear opening for the withdrawal of said valve,

member and its gland from the' casing.

-2. The combination in an internal combustion' engineer avalve casing secured to the engine wallv and-having a' valve seat` adjacent'4 the combustion space, a fuel injection'valve member c'oacting with said seat, a ffu'elnatomazer sleeve surround-in said ing4 and a 'valve operating-member formedto provide .a-iclear 01313111115,v Afor the withdrawal ofV tlieyv` flvein'emb'er, atomizer and gland-4 arts may be removed.

'valve casing, a 'valve therein, a gland, a

spring for seating said valve and a springcase adapted to maintain the 'spring under tension when removed from the engine in combination with a valve operating lever constructed to provide a clear opening for the withdrawal of the valve member and gland as a unit from the casing.

4. In an internal combustion engine, a

Valve casing, a fuel valve and atomizer therein, a packing gland, a spring for seating the valve and a vspring case 'adapted to maintain tension in the sprin when removed from the engine, in combination with a valve operating lever constructed to pro- 'vide a clear opening for -the withdrawal of the valve member, the gland and the atomizer. 1 'L 5. The combination in an internal coin-` bustion engine of a valve casing, a lfuel valve needle having a seat in the interior of the 7. In an intern l combustion engine, a

adapted to accommodate the removal valve casing beari g a bracket arm, a valve lifter 'fulcrumed on said bracket and means for actuating it, a valve member in the`cas Aing and a lgland therefor secured in xed relation to the casing, said lifter being formed to provide a clear draw'al of the valve mem er and gland as a unit from he casing without disturbingv the adjustment of the valve lever or said actuating means. Y

-8. In an internal combustion 'engine 4the combination of the needle valve 4 and pack- `-ing gland 16, with the apertured valve-lever 12 and the removable thrust member 14,-'

forming an -operating connection between .-sai'd apertured lever and valve.v

9. In an internal combustionI'engine,'l-the p ath for the withcombination of a valve, a fuel -atom1 zer, vand a valvev operating means, with a` valve-eas ing' from which saidatomizer ,is removable in the direction of said means without Vsepa- 'rating said operating-:means from casing.

1Q. In an internalcongbustion e' ine, the combination of a valve,x` apa'cki`ng g sind .fer

the valve, v,a yvalve-'closing spring outside thev gland, means'v independent bftlie.j'gland to operating means, with" 'nf'valve casingv from said spring, anda valve-v J v' I 10 ineens.

Leeeme jvliicli said valve, gland and springare, re-

movable 'as a unit and Without disturbing the adjustmentof the v'alve operatingjmeens.

in the`direction and without disturbing the .ediustment` of 'the said valve operating l ,12. linI an internal combustion engine, the

combination of a valve casing, et valve open ating meansl mounted thereon, a valve, a gland foi' seme, and fuel atomizing means, in which the seid operetingmeans are provided vvith :i passage having a clem' opening greater than the 'outside diameters of the said valve, said gland and seid atomizing specification.

ADOLF TACCHELLA. 

